Injection system for an internal combustion engine and method for regulating and/or bleeding of said system

US6748923B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Thomas Grossner · Neutraubling, DE
• Klaus Husslein · Regensburg, DE
• Christoph Klesse · Neustadt an der Donau, DE
• Martin Werner · Langenau, DE
• Eckbert Zander · Tegernheim, DE

Key dates

• Filing date: May 7, 2003
• Grant date: Jun 15, 2004
• Expiry date: May 7, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G05D7/0133
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An injection system for an internal combustion engine comprises a valve arrangement (26), connected to an inlet (24) to a high pressure pump (8), which regulates the flow of fuel for lubricating and cooling the high pressure pump (8) and bleeds the injection system. The valve arrangement 926) comprises at least one displaceable actuator and a first and second throttle device (30, 32). The actuator (36) is regulated according to a pressure of the fuel flow between a feed supply pump (6) and the high pressure pump (8), such that a first connection to, the high pressure pump (8) is opened, by means of the first throttle device (30), or the feed (24) to the high pressure pump (8) is interrupted, or a second connection to the high pressure pump (8) is opened, by means of the second throttle device (32). The invention further relates to a method of bleeding and/or regulating said injection system.